Heat oil and add red pepper flakes.,______,Add the 4 chopped scallions and saute for a minute.,Remove from heat and stir in the brown sugar, rice vinegar,sesame oil, soy sauce, ginger and garlic.,Return pan to low heat and add peanut butter a bit at a time.,Stirring constantly add chicken broth until hot.,Place cooked fettucini in large shallow bowl and pour the hot peanut sauce over and toss.,Sprinkle with toasted peanuts and scallions.,Place cucumber slices and red pepper strips around pasta.,Sprinkle with coconut if desired.